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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Can survive ~7 days in cow. vast majority <48 hours






2. Larger the cow - more milk is produced; smaller the cow - less milk is produced






3. ~305 days (altough often longer due to breeding difficulties)






4. 4-6 days






5. Look for infection - split - and rupture of the penis






6. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






7. 19-23 (21) days






8. 30 hours after estrus begins






9. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg






10. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






11. (switzerland) 2nd in size and milk production - most muscle -






12. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






13. Duct through penis that carries sperm and urine






14. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






15. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






16. 30-38 hours after estrus cycle begins






17. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated






18. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






19. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.

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20. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






21. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






22. 30-38 hours after estrus cycle begins






23. 1-3 days






24. To remove/separate testicles from animal's body before animal reaches puberty






25. 114 days






26. Prevent the cow from getting an infection from the calve






27. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






28. Scar tissue plugs up chambers of udder






29. Failure to have one testis (gonad) to descend






30. Why does estrus happen before ovulation?






31. 147 days






32. 14-19 (17) days






33. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.






34. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






35. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






36. Contains and regulates the temp of the testes for sperm production






37. Front feet and head first. (except for hogs and dogs)






38. Start of the reproductive tract for the female. located outside of the body






39. Days which have decreasing daylight hours

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40. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






41. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells






42. Birthing process (termination of gestation)






43. Knife-loose ~1wk of growth. band-loose ~2wks of growth.






44. Urinary calculi.






45. Animals which have only one estrous cycle (ex: dog - fox)






46. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






47. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.






48. Implies the amount of estrogen production






49. (switzerland) 2nd in size and milk production - most muscle -






50. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has